2021233142 has 4 divisors (see below), whose sum is σ = 3031849716. Its totient is φ = 1010616570.

The previous prime is 2021233141. The next prime is 2021233157. The reversal of 2021233142 is 2413321202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2413321202 = 2 ⋅1206660601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021233141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505308284 + ... + 505308287.

It is an arithmetic number, because the mean of its divisors is an integer number (757962429).

Almost surely, 2^2021233142 is an apocalyptic number.

2021233142 is a deficient number, since it is larger than the sum of its proper divisors (1010616574).

2021233142 is a wasteful number, since it uses less digits than its factorization.

2021233142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010616573.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2021233142 is about 44958.1265401484. The cubic root of 2021233142 is about 1264.3640440996.

Adding to 2021233142 its reverse (2413321202), we get a palindrome (4434554344).

The spelling of 2021233142 in words is "two billion, twenty-one million, two hundred thirty-three thousand, one hundred forty-two".